7285665 has 16 divisors (see below), whose sum is σ = 11822976. Its totient is φ = 3830400.

The previous prime is 7285661. The next prime is 7285679. The reversal of 7285665 is 5665827.

It is a happy number.

It is not a de Polignac number, because 7285665 - 2² = 7285661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7285661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2356 + ... + 4485.

It is an arithmetic number, because the mean of its divisors is an integer number (738936).

Almost surely, 2^7285665 is an apocalyptic number.

It is an amenable number.

7285665 is a deficient number, since it is larger than the sum of its proper divisors (4537311).

7285665 is a wasteful number, since it uses less digits than its factorization.

7285665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6920.

The product of its digits is 100800, while the sum is 39.

The square root of 7285665 is about 2699.1971028437. The cubic root of 7285665 is about 193.8606804311.

The spelling of 7285665 in words is "seven million, two hundred eighty-five thousand, six hundred sixty-five".